Lock.



1-. msmxw.

LOCK.

APPLICATION HLED DEC- ]0. I917.

1,268,503, Patented June 4,1918.

Ave M1704 WTED STATE PATENT @FFTQE.

JOHN H. SHAW, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT & COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

Application filed December 10, 1917.

To all whom it may concern:

Be it known that 1, JOHN H. SHAW, a citizen of the United States, residing in the city and county of New Haven, State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact de scription.

This invention relates to looks, and it has more particular reference to pin tumbler cylinder locks for use on comparatively thin sheet metal doors such as are commonly used in locker construction. The invention refers more especially to a cylinder lock applicable to the sheet metal doors of tool or other compartments on the instrument boards or cowl boards of automobiles, although the invention is applicable to other sheet metal structures.

One of the primary objects is to provide a simple, cheap and efficient means for interlocking a thin sheet metal door and door frame.

Another object of the invention is to provide a lock construction for a thin, hinged door in which a cylinder lock carried mainly at the rear face of the door cooperates in a novel and efiicient way with the edge of the door frame. For this purpose the locking arm or cam on the key plug of the cylinder lock, instead of being located at the rear end of the key plug, as customary, is mounted on the front end thereof, so that it can have direct and positive cooperation with the edge of the door frame.

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawing:

Figure 1 is a fragmentary front elevation of a sheet metal door and door frame equipped with a lock embodying my improvements, the lock being indicated in dotted lines upon the inside of the door, and the locking arm being indicated in locking engagement with the door frame;

Fig. 2 is a rear view of the parts shown in Fig. 1, the locking arm being shown in looking engagement with the door frame;

Fig. 3 is a view similar to Fig. 2, showing the locking arm disengaged from the door frame.

Fig. 4 is a section taken on the line 45- 1 of Fig. 1

Specification of Letters Patent.

Patented June 4:, 1918.

Serial No. 206,475.

Fig. 5 is a plan view of the lockremoved from the door, the locking arm being shown in locking position;

Fig. 6 is a front view of the lock removed from the door, the locking arm being shown in its locking position; and

Fig. 7 is a front view of the locking arm removed from the look.

In the drawings, I have shown my im proved lock applied to a sheet metal door 10 mounted upon a door frame 12 by means of hinges 11. However, it will be apparent that my improved lock may be used in other connections.

Upon the rear face of the door 10 is mounted a cylinder lock designated generally by 13. This lock is provided with the well-known pin tumblers 14: mounted in the pin tumbler extension 18 and operated by a key 15 inserted in the key-plug 16. The several elements of the look so far described are old and well-known, so that a detailed description is not necessary. My

cylinder lock differs from those now in gen-- eral use in that the main part of the lock is spaced from the rear face of the door or similar surface upon which it is mounted by means of supporting lugs or brackets 25 hereinafter more fully described, and the key-plug 16 is provided at the forward end with a forward extension having a cam or other device for securing the door to the door frame. A clearance space is formed between the main part or casing of the cylinder lock and the rear face of the surface upon which the lock is mounted. This clearance space permits the locking arm or cam member 19 having the round opening 20 therein to be mounted upon the portion of the key plug which extends forwardly of the pin tumbler extension 18. In order that the locking arm 19 may be operated by the keyplug 16, the forward portion of the key-plug is provided with a projecting pin 21 which fits into a notch 22 formed in the locking arm 19, the arrangement being such that when the key-plug is rotated the looking arm will be rotated also. The arm 19 is further provided with a stop 23, which serves to stop the movement of the arm when it-has been brought into proper engagement with the door frame 12. The outer end of the arm 19 is provided with an offset portion 24: which is shaped to conform to the rounded edge portion of the sheet metal door frame 12 at the rear of said frame.

The cylinder lock 13 is preferably secured to the inner face of the door 10 by a pair of perforated lugs 25, which extend laterally from the cylinder lock on opposite sides of the front portion thereof. These lugs may be secured to the door 10 by any desired means such as rivets 26. The front end of the key-plug 16 projects through a round opening formed in the door 10, in which opening the circular flange 17 is seated. The rear end of the key-plug extends a short distance beyond the rear face of the pin tumbler extension 18 and a circumferential groove is formed in this extension adjacent the rear face of the pin tumbler extension, in which groove may be sprung a resilient -s )lit rin 27. This rin and circular move form a'convenient means for preventing the key-plug 16 from moving laterally in one di-- rection, whereas the flange 17 which bears upon the outer surface of the locking arm 19, prevents the key-plug from moving in the opposite direction.

[From the above description it will be apparent that the cylinder lock is positioned upon the inner face of the door 10, so that the pin tumbler extension 18 extends in, the direction of the portion of the door frame with which the arm 19. is to be engaged; that is, the position of the extension 18 is such that when the arm 19 is moved into engagement with the door frame 12, the arm will lie in front of the extension 18, so that any lateral force exerted upon the locking arm 19 in an effort to force the door 10 open will be resisted by the face of the extension 18 which contacts with the inner face of the arm 19. When the arm 19 is swung out of engagement with the door frame, as shown in Fig. 3, its movement in this direction is limited by an edge of the arm coming in contact with one of the lugs 25, and its move ment in the opposite direction is limited by the stop 23, above mentioned, contacting with one of the lugs 25. By thus limiting the angle through which the arm may be moved, the key cannot be removed from its lock except when the arm is moved to the locking position. Therefore, since it is not likely that the person possessing the key 15 will go off leaving the key in the door, he will not be likely to accidentally leave the door lOunlocked.

From the above description, it will be seen that the construction by which the locking arm 19 may be mounted upon the forward end of the key-plug provides an extremely desirable way of mounting the arm adjacent the rear of a sheet metal door, and also provides a very convenient means for mounting a locking arm upon the key-plug for a cylinder lock and for operating the same.

As will be observed from Fig. 4, the free edge of the door 10 overlaps the adjacent edge of the door frame 12 to a certain extent and the free edge portion of the door is curved inwardly, while the free edge portion of the frame is curved outwardly. This enables the edge of the door to be crowned or rounded, giving it a more massive appearance and at the same time strengthening the same and avoiding unsightly projecting edges. The forward curving of the edge portion of the door frame, on the other hand, insures the proper seating of the edge of the door and supports the same from the rear at two points, the extreme edge of the door abutting against the front face of the frame member and the extreme edge of the frame member abutting the rear face of the door. The outer portion 24 of the locking arm 19 lies back of the curved portion of the member 12 and is curved so as to conform. to the same, as shown in Fig. 4, so that when the arm is in the locking position the door and frame will be very firmly and rigidly interlocked so as to prevent rattling. The arrangement is such, moreover, that the arm 19 has a camming or clamping effect as it is moved to the locking position, so that when it reaches such position the door and frame will be subjected to clamping pressure, because when the device is used on an automobile all rattling noises must, of course, be eliminated.

Various changes may be made in the details of the construction without departing from the scope of the invention as defined in the claims.

It will be noted that in Figs. 1 and 8 of the drawing, the locking arm 19 is shown slightly displaced relative to the pin tumbler extension 18; this arrangement by which the locking arm lies slightly to one side of the keyplug upon. which it is mounted permits the arm. to be easily disengaged from looking engagement with the door frame 12. a

. What I claim is:

1. In a locker or the like, the combination of sheet metal door and frame members having oppositely beveled edge portions in overlapped relation, and a cylinder lock for in tel-locking said edge portions.

2. In a locker structure or the like, sheet metal door and frame sections having interengaging overlapping edges, and a cylinder lock on one of said sections for interlocking said sections directly,

8. In a locker structure or the like, thin sheet metal door and frame sections having oppositely directed interengaging edge portions which are in overlapped relation when the door is closed, and a cylinder lockhaving an arm for securing said sections together in the locked position.

1. In a locker structure or the like. the combination of a door and door frame having portions which are in overlapped-interengaging relation when the door is closed, and a cylinder lock on one of said part-s having an arm which cooperates directly with the overlapped portions of the door and door frame in locking the door to the frame.

5. In a locker structure or the like, a hinged sheet metal door, a sheet metal door frame, the edge portion of said door being inwardly curved and arranged to overlap the edge portion of the door frame which is outwardly curved, and a cylinder lock mounted on the door and having a locking arm cooperating with the overlapped portions of the door and frame.

6. In a locker structure or the like, a hinged sheet metal door, a sheet metal door frame, the edge portion of said door hinged to overlap the edge portion of the "door frame when the door is closed, and a cylinder lock mounted on the door and having a locking arm cooperating with the overlapped portions of the door, said locking arm having a cam action on said parts to clamp them tightly together.

7. In a locker structure or the like, a hinged door, a door frame, said door and frame having meeting edge portions which overlap when the door is in the closed position, a cylinder lock carried by the door and having a key-plug, and a locking arm on the forward end of the key-plug extending back of and engaging the face of the door frame for locking the parts together.

8. In a locker structure or the like, a hinged door, a door frame, said door and frame having meeting edge portions which overlap when the door is in the closed posi tion, a cylinder lock carried by the door and having a key-plug, and a locking arm on the forward end of the key-plug extending back of the edge of the door frame for look ing the parts together, said locking arm constructed and arranged to force the door and frame together when the arm is moved to the locking position so as to create a nonrattling oint.

9. In a locker structure or the like, a sheet metal door frame having an outturned edge, a sheet metal. door having an inturned edge adapted to overlap the outturned edge of the door frame, and a key-controlled bolt swingingly mounted upon the inner face of said door and positioned to be moved into locking engagement with the inner face of the frame.

10. In a locker structure or the like, a sheet metal door frame having an outturned edge, a sheet metal door having an inturned edge adapted to overlap the outturned edge of the door frame, and a lock cooperating with said edge portions, having a locking arm at the rear face of the door extending back of and conforming to the outturned edge of the door frame.

11. In a locker structure or the like, a

sheet metal door frame having an outturned edge, a sheet metal door having an inturned edge adapted to overlap the outturned edge of the door frame, and a cylinder lock for said door comprising a pin tumbler extension spaced fro-m said door and a locking arm for locking said door in place operatively secured to said lock between the extension and the door, the outer end of said arm being positioned to extend back of and constructed to conform to the outturned edge of the door frame.

12. In a locker structure or the like, a door, a door frame, a cylinder lock project ing rearwardly from the rear face of said door and having a key-plug, and a separate arm mounted upon the front end of said key-plug between the rear face of the door and the casing of said lock for locking the door to the door frame.

13. In combination with a door, a pin tumbler lock applied to the rear face thereof and having a forwardly projecting key-plug, and a locking arm for the door embracing the forwardly projecting end of the keyplug and operated thereby.

14. In combination with a door, apin tumbler lock applied to the rear face thereof, a pin tumbler extension upon said lock, and a door locking arm operatively secured to said lock between the door and the pin tumbler extension.

15. In combination with a door, a lock having a casing and a key-plug located at the rear of said door, the main portion of the casing being spaced rearwardly from the door, and a door locking cam operatively secured to said key-plug between the door and the main part of the casing and con fined between the rear face of the door and the front face of the lock casing.

16. In combination with a door, a pin tumbler lock having a casing and a key-plug located at the rear of said door, the main portion of the casing being spaced rear- Wardly from the door and the key-plug extending forwardly thereof, and a door locking element operatively secured to the forwardly extending portion of the key-plug.

17. The combination of a door and its door frame, having a pin tumbler lock applied to the rear face of the door, a door locking element .operatively secured to said lock between the pin tumbler portion of-the lock and the rear face of the door, the outer end of said element having looking engagement with the door frame.

18. In combination with a plate, a pin tumbler lock applied to the rear face thereof, having a pin tumbler extension spaced from said plate, and a locking arm for looking said plate in place operatively secured to said lock between the extension and the plate, said extension being positioned to extend in the direction of and lie directly be- 

